Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
You are not logged in.
- Topics: Active | Unanswered
Pages: 1
#1 2009-07-16 04:15:41
- soroban
- Member
- Registered: 2007-03-09
- Posts: 452
Find the flaw
]
.
Offline
#2 2009-07-16 05:21:20
- JaneFairfax
- Member
- Registered: 2007-02-23
- Posts: 6,868
Re: Find the flaw
soroban wrote:
Last edited by JaneFairfax (2009-07-16 06:28:10)
Offline
#3 2009-07-16 05:45:37
- mathsyperson
- Moderator
- Registered: 2005-06-22
- Posts: 4,900
Re: Find the flaw
JaneFairfax wrote:
True, but that's not the main problem.
After your fix, we still have that P(B) = 2/3, so the "conclusion" still holds.
Why did the vector cross the road?
It wanted to be normal.
Offline
#4 2009-07-16 06:36:46
- JaneFairfax
- Member
- Registered: 2007-02-23
- Posts: 6,868
Re: Find the flaw
I dont see what the problem is, really (if not the minor one I pointed out). If you have two Black balls and one White ball in the bag, the probability of picking a Black ball is ⅔. If you have one Black ball and two other balls that can be either colour, the probability of picking a Black ball is also ⅔. There is nothing wrong with the probabilities of two different scenarios happening to be the same.
Last edited by JaneFairfax (2009-07-17 02:34:53)
Offline
Pages: 1